Following a discussion on "Link & Ranking Strategies for Enterprise Sites" at SEOMoz, Hamlet Batista wrote an interesting article on ways top pass the link love around a web site using a dynamic solution.
Basically the conversation started about Enterprise sites - ones with tens of thousands to millions of pages. Many of the pages have little if any Page Rank and Rand started the discussion with suggestions of how the link love can be shared inside a website.
Batista contributed to the comments and then wrote his own piece with details of how this could be programmed to be done dynamically.
Both articles are worth a read.